Protozoa 2 Flashcards
what are Trypanosomatids?
blood flagellates
what are Leishmanias?
tissue flagellates
how are Trypanosoma brucei and Trypanosoma congolense transmitted?
salivarian
how are Trypanosoma cruzi transmitted?
stercorian
what is the vector species of Trypanosoma brucei and Trypanosoma congolense?
Glossina species
what is the vector species of Trypanosoma cruzi?
Reduviid species
what is the life cycle of Trypanosomes?
indirect
what is the pathogenesis of trypanosomiasis?
antigenic variation: interferes with immune response
what species are susceptible to trypanosomiasis?
equines, some ruminants and dogs: acute
cattle: slower progress of infection
what are the clinical signs of trypanosomiasis?
anaemia, edema, fever, eye and nose discharge, weight loss, paralysis, death
how is trypanosomiasis diagnosed?
parasites in blood: concentration method
what is the progression of African tropanosomiasis?
blood to lymphatics to CNS to death
where does Trypanosoma congolense impact?
Africa: ruminants
nagana
who does Trypanosoma equiperdum impact?
equids, sexually transmitted, chronic
dourine
where are who do Trypanosoma vivax infect?
South America
cattle
tabanid vector
what does Trypanosoma cruzi cause?
Chagas’ disease: humans and rarely dogs
what is the epidemiology of Trypanosoma cruzi?
zoonotic
infects many wild, domestic animals
how is Trypanosoma cruzi transmitted?
Reduviid bugs
infectious trypomastigotes in feces
what is the pathology of Trypanosoma cruzi in dogs?
amastigotes form pseudocysts in muscles, acute myocarditis
congestive heart failure
what is the veterinary importance of Leishmania?
canine leishmaniasis
what is the medical importance of Leishmania?
cutaneous, mucocutaneous, visceral leishmaniasis
how is Leishmania transmitted?
sandfly vector (Phlebotomus, Lutzomyia)
what are the reservoirs of Leishmania?
dogs
rodents
where is Leishmania infantum important?
mediterranean basin
